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https://issues.apache.org/jira/browse/SPARK-6540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14381140#comment-14381140
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Alex Liu commented on SPARK-6540:
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Pass session HiveConf to NativeCommand(sql, hiveconf), then set the hiveconf to
the thread local is a way to isolated hiveconf per session.
> Spark SQL thrift server fails to pass settings to following query in the same
> session
> -------------------------------------------------------------------------------------
>
> Key: SPARK-6540
> URL: https://issues.apache.org/jira/browse/SPARK-6540
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.2.1
> Reporter: Alex Liu
>
> e.g.
> By using beeline
> > set cassandra.username=user;
> > set cassandra.password = pass;
> > show databases;
> The "show databases" query fails due to missing cassandra.username and
> cassandra.password configuration in hiveconf when create the metastore client.
> Same test passes in HiveServer2.
> This document
> https://cwiki.apache.org/confluence/display/Hive/HiveServer2+Thrift+API
> mentions how HiveServer2 maps the connection to session(explicit support for
> sessions in the client API, e.g every RPC call references a session ID which
> the server then maps to persistent session state.), but Spark Hive thrift
> server fails to delivery the same function though it wraps HiveServer2
> internally.
> Spark Hive thrift server contains a single hive context which has a single
> hiveConf shared by all sessions. Ideally we should isolate it per session.
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